I'm a software engineer probably with AS - currently being diagnosed. Funnily enough, I first found out about AS whilst wondering about a colleague who, although we were great friends (geeks united), he did have some very curious traits. My insides felt like they'd fallen out when I realised that AS actually applied much more to me than him.
Don't know whether this is an overall pattern, but in my experience there is a higher percentage of Autistic type traits in smaller companies. Even the founders, the head honchos, can be somewhat AS. Recently I've been working in Big Defence Corporations and here there is a much, much lower percentage of AS. I think that it's maybe 1 in 10 or so and these are the ones who do the actual development work. The other 9 get paid for filling out pointless documentation, attending meetings and succesful body-language interactions with the boss
And above a certain, quite low level in the heirarchy, AS traits are totally non-existent.
I'd really like to get back to a smaller company to escape from the Dilbert horrors of the big-corps. But it's really difficult as smaller, product based firms don't have the staff turnover of the larger ones. So you get the same 6 devs working at a place for 10 years and no vacancies (unless it's Y2K boom time). And when I've been interviewed, they think I've been corrupted by big-corp mentality ie can't code, just fills in forms all day.